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- Maricopa, Arizona
- Hopatcong Hills, New Jersey
- Opa-locka, Florida
- Hopatcong, New Jersey
- Mahopac, New York
- Topanga, California
- Opal Cliffs, California
- Lake Pocotopaug, Connecticut
- Tonopah, Nevada
- Maricopa, California
- Chetopa, Kansas
- Copake Lake, New York
- Copan, Oklahoma
- Shungopavi, Arizona
- Opal, Virginia
- Copalis Beach, Washington
- Topawa, Arizona
- Topaz Lake, Nevada
- Tecopa, California
- Opal, Wyoming
- Tonopah, Arizona
- Topaz, California
- Cotopaxi, Colorado